Apparatus for reducing the watt loss of a grain-oriented electromagnetic steel sheet

The watt loss of a grain-oriented electromagnetic steel sheet can be reduced by known methods in which serrations or scratches are locally formed on the steel sheet or a small ball or disc is rolled or rotated over the steel sheet. The known methods are disadvantageous in that the rate of production...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KIMOTO, TETSUO, ORITA, KIYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GRINDING INDUCTANCES MAGNETS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POLISHING SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The watt loss of a grain-oriented electromagnetic steel sheet can be reduced by known methods in which serrations or scratches are locally formed on the steel sheet or a small ball or disc is rolled or rotated over the steel sheet. The known methods are disadvantageous in that the rate of production is low and in that the steel sheet has a marked unevenness. In the present invention, particles, e.g., steel shots, are projected onto substantially linear selected portions of a grain-oriented electromagnetic steel sheet, thereby producing strain in spot-formed regions. An apparatus according to the present invention comprises an endless conveyor and a means for projecting particles. Slits are formed in the endless conveyor, and particles are projected through these slits onto the substantially linear selected portions.